BMW 12138616153 Ignition Coil

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To remove the engine cover, lift the front of the cover up and pull it forwards. Then, remove the cabin air filter cover and mounting fasteners. Slide the filter from the housing. Release the clips and remove the plastic covers on each side of the engine compartment. Unclip the hose from the left-hand cover. Depress the clips and pull the cable guide forwards from the cabin air filter lower housing. Release the clip and remove the bolt at each side, then slide the cabin air filter lower housing forwards and maneuver it up and out. Unscrew the oil filler cap, then remove the bolts and the plastic cover from the top of the engine. Pry up the right-hand edge of the plastic covers over the ignition coils and disconnect the coil electrical connectors. With the wiring plugs disconnected, pull the coils from the spark plugs. For models with strut tower supports, remove the plastic cap from the center of the cowl trim panel and remove the bolt in the center of the cowl. Remove the bolt at each outer end of the supports, hold the rubber grommet in place and slide the supports outwards. Unscrew the oil filler cap, then remove the bolts and the plastic cover from the top of the engine. Pry up the right-hand edge of the plastic covers over the ignition coils and disconnect the coil electrical connectors. With the wiring plugs disconnected, pull the coils from the spark plugs. Installation is the reverse of removal, ensuring that any ground wires or brackets are reinstalled as noted before removal.

To remove the engine cover, lift the front of the cover up and pull it forwards. Then, remove the cabin air filter cover and mounting fasteners. Slide the filter from the housing. Release the clips and remove the plastic covers on each side of the engine compartment. Unclip the hose from the left-hand cover. Depress the clips and pull the cable guide forwards from the cabin air filter lower housing. Release the clip and remove the bolt at each side, then slide the cabin air filter lower housing forwards and maneuver it up and out. Unscrew the oil filler cap, then remove the bolts and the plastic cover from the top of the engine. Pry up the right-hand edge of the plastic covers over the ignition coils and disconnect the coil electrical connectors. With the wiring plugs disconnected, pull the coils from the spark plugs. For models with strut tower supports, remove the plastic cap from the center of the cowl trim panel and remove the bolt in the center of the cowl. Remove the bolt at each outer end of the supports, hold the rubber grommet in place and slide the supports outwards. Unscrew the oil filler cap, then remove the bolts and the plastic cover from the top of the engine. Pry up the right-hand edge of the plastic covers over the ignition coils and disconnect the coil electrical connectors. With the wiring plugs disconnected, pull the coils from the spark plugs. Installation is the reverse of removal, ensuring that any ground wires or brackets are reinstalled as noted before removal.

To remove the engine cover, lift the front of the cover up and pull it forwards. Then, remove the cabin air filter cover and mounting fasteners. Slide the filter from the housing. Release the clips and remove the plastic covers on each side of the engine compartment. Unclip the hose from the left-hand cover. Depress the clips and pull the cable guide forwards from the cabin air filter lower housing. Release the clip and remove the bolt at each side, then slide the cabin air filter lower housing forwards and maneuver it up and out. Unscrew the oil filler cap, then remove the bolts and the plastic cover from the top of the engine. Pry up the right-hand edge of the plastic covers over the ignition coils and disconnect the coil electrical connectors. With the wiring plugs disconnected, pull the coils from the spark plugs. For models with strut tower supports, remove the plastic cap from the center of the cowl trim panel and remove the bolt in the center of the cowl. Remove the bolt at each outer end of the supports, hold the rubber grommet in place and slide the supports outwards. Unscrew the oil filler cap, then remove the bolts and the plastic cover from the top of the engine. Pry up the right-hand edge of the plastic covers over the ignition coils and disconnect the coil electrical connectors. With the wiring plugs disconnected, pull the coils from the spark plugs. Installation is the reverse of removal, ensuring that any ground wires or brackets are reinstalled as noted before removal.

Make sure the ignition is switched OFF. Remove the ignition coil cover. Unlock the ignition coil connector and pull the connector off the coil. Slide the rod-shaped ignition coil straight out of the spark plug hole. Be cautious to maintain cleanliness when servicing ignition coils. Fuel and oil residue can cause a breakdown in the electrical resistance of the silicone encased coil, resulting in ignition coil failure. Installation is the reverse of removal. Check for fault codes and reset ECM memory.

Each spark plug is fed by its own coil, and the coils are mounted directly on top of the spark plugs, in the valve cover. Ensure the ignition is switched off. Remove the engine oil filler cap. Remove the in-cabin air filter and the heater/ventilation inlet air ducting from the rear of the engine compartment. Pry up the plastic caps, remove the retaining screws, and remove the plastic cover from above the injectors. Remove the plastic cover from the top of the cylinder head cover. To remove the cover, pry out the cover plates and unscrew the two securing nuts, then lift and pull the cover forwards. Manipulate the cover over the oil filler neck. Lift the securing clip, and disconnect the electrical connector from the relevant coil. If all the coils are to be removed disconnect all the connectors, then unscrew the nut securing the coil wiring ground lead to the stud on the front of the timing chain cover the wiring harness can then be unclipped from the camshaft cover and moved to one side. Unscrew the two coil securing bolts, noting the locations of any ground leads or brackets secured by the bolts. Note that the coil connectors are spring-loaded, so the top of the coil will lift as the bolts are unscrewed. Pull the coil from the valve cover and spark plug, and withdraw it from the engine. Installation is a reversal of removal, but ensure that any ground leads and brackets are in position as noted before removal.

Make sure the vehicle's ignition is turned off and take out the ignition coil's lid. Pull up the connector by the tab of the sliding lock, unbolt the ignition coil, and then, pulling it upwards, remove it from the cylinder head. It is the opposite of removal procedure and it also involves checking of cables or wires that need connection to the ground. Last of all, read fault codes and clear and reset ECM.

There is a separate ignition coil above each spark plug replacement. Maintain a high level of cleanliness when servicing ignition coils. Fuel/oil residue can cause a breakdown in the electrical resistance qualities of silicone used on production, which can result in ignition coil failure. To replace the ignition coil on an M54 engine, make sure the ignition is switched OFF. Remove the upper engine cover. Lift up on the lock and release the ignition coil electrical connector. Remove fasteners and note the position of the coil ground wire. Remove the ignition coil by pulling straight up and off the spark plug. Installation is the reverse of removal. Be sure to reattach ground cables or wires. Check and clear fault codes from ECM memory. For an N52 engine, make sure the ignition is switched OFF. Remove the upper engine cover. Unlock the ignition coil connector and pull the connector off the coil. Slide the rod-shaped ignition coil straight out of the spark plug hole. Installation is the reverse of removal. Check and clear fault codes from ECM memory.

A three-dimensional map is digitally stored in the ECM, and the initial ignition point is determined by the crankshaft sensor during cranking. The ECM continuously adjusts ignition timing based on operating conditions once the engine is running.

Unlock the ignition coil connector and pull it off the coil.

One method is to remove the DME main relay located in the electronics box in the right rear of the engine compartment.

Remove the ignition coils cover.

When servicing ignition coils, cleanliness should be maintained. Fuel and oil residue can cause a breakdown in the electrical resistance of the silicone encased coil, resulting in ignition coil failure.